<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      var canJump = function (nums) {
        if (nums.length <= 1) return true
        let cover = nums[0]
        for (let i = 0; i <= cover; i++) {
          cover = Math.max(cover, i + nums[i])
          if (cover >= nums.length - 1) return true
        }
        return false
      }
    </script>
  </body>
</html>
